Apparatus for the production of hydrate of lime.



.No. 897,495. PATENTED SEPT. 1,1908.

W. SGHULTHESS. THE PRODUCTION OF HYDE ATE OF LIME.

APPARATUS FOR 2 SHEETS-SHEET 1 APPLICATION FILED SBPT.16, 190"].

No. 897,495. PATENTED SEPT. 1, 1908,

w. scmmmss. I APPARATUS FOR THE rnonnomm OP HYD APPLIOA TION FILED SEPTJB, 1907.

RATE OF LIME.

2 SHEETS-SHEET 2.

Illll Wl-l lll ,7 ////l winesms':

a W, :1; 1 magi-1 lllli jjm the art'to which it appertams to make and A paratus for .the production of dry, pul- 4 of its, construction, its greatsimphclt'y and UNITEDSTATES PATENT ()FFICE. WALTER scnoLrHEss, or riiirs', FRaNGE.

APPARATUS FO B PRODUCTION OF HYDBATE OF LIME.

No. 897,495. Specification of Letters Patent. Patented Sept. 1, 1908. Application filed September 16, 1907. Serial no. 393,098.

sieve into the rear part of the slaking apparatus. i

e are arms fixed upon the shaft 0 which support the sieve in t e middle of its lengthand which are constructed as mixing an transporting blades.

, At the bottom 0 the char ing hopper b is arrangedamovablegrid c ;-t eformer is con: nected to the slakin receptacle (1 by a socket b; a flange on w 'ch tightly fits round the sieve end next the chargin opening to prevent the lime from falling etween the socket and the front piece of the sieve and consequently rapid wearing out of these parts during the rotation of the sieve. The socket Wis formed with an opening which is close by a movable flap 1) and through which all unslakable lar e pieces oflime remaining in the sieve, un urnt or too stron ly burnt lime, slag, coke etc. can be perio ically removed. The receptacle .0 is furthermore rovided with avapor pipe 0 laced above the sieve w, and at the end of t e slaking receptacle. opposite the charging opening is provided an outlet opening a furnished with a spout a for em tyin out the slaked lime. The shaft 0 is hol ow a ong the whole' length ofthe sieve as andis formed with small open-vv ings a which allow the water required for the slaking of the lime to be admitted in a finely divided form. 'The shaft can be rotated by I means of a driving pulley.

The method of working with this apparatus is as follows: A definite amount 0 urnt lime, always the same, is introduced into the charging hopper b, which at such time is shut off from the sieve by means of the movab e grid c ;theq\l1antity of water required for the slaking of t e lime is next delivered into a receptacle not shown in the drawing. By

ulhn back the grid sha ed slide 0 the urnt 'me in the charging opper is cause to fall into the sieve in; at the same time the water contained in the water receptacle is allowed to flow through the openings 0 onto the lime. The shaft e is then set 1n rotary motion 13% throwing into action t e driving pulley. he slaking which ensues converts the pieces of lime into a mixture of fine powder and small pieces whichfall; through the meshes of the sieve onto the bottom of the receptacle where b the-worm x it is fed mto l the rear part of t e apparatus where it is mixed in .the most intimate manner-by the. and transporting blades f mounted To all-whom it may concern:

,Be it knowh that I, WALTER Sontrurnnss, a citizen of the Republic of Switzerland, residing at Paris, in France,have invented cer- 5 tain new and useful Improvements in Apparatus for the Production of Hydrate of Lime; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enableothers skilled in use the same, reference being hadto the accompanyin drawings, and to letters or figures of re erence. marked thereon, whic form a part of this specification.

veru ent hydrate of lime, comprising a a ing receptacle provided with a charg ng hoper, a water supply arrangement, and mixlng apparatus, and which is also adapted to 20 be heated by a steam jacket, are known. The subject matter 0 the present invention is a s milar apparatus, which, in com arison with the, constructions already own, is distingui hed by the compactness by the small consumption of power required to operate it.. Moreover the apparatus, as hereinafter described, is at the same time so' constructed, that by its use not only dry but 30 also asty hydrate of lime can be prepared and t erefore the steam heatingjacket of the older constructions ma be omitted, as in the example hereinafter escribed with reference to the accompanying drawings,'although 35 it should be stated that the improved ap a ratus can be provide with a double wa l or heating jacket if desired.

Referrin to such drawings, Figure 1 shows in vertical ongitudinal section, and Fig. 2 in 40 plan, one construction of apparatus according to this invention. I Fi 3 is a vertical section illustrating a modification.

a'is the cylindrical slaking rece tacle, b the charging hopper and e the sha t of the 45 mixing apparatus which carries mixing an trans orting blades f. Upon. the shaft 0 is also ed on the part adjacent to the charging hopper b a coarse meshed sieve as in the form of a cylindrical receptacle 0 en towards 50 the charging hopper or towards the char ing opening ma e at one end of the. receptac e a; and arran ed concentrically to the shaft 0; the sieve. as upon its external peri hery a 'worm m for the urpose. of conveying the 55 lime which falls t ough the meshes of the uponth'e shaft and under the action of the working with such apparatus is the same as steam -evolved by the process of slakin is formerly descr bed, care'being taken that the completely slaked. The lime thus sla ed openings mentioned are carefully closed bepasses continuously through the outlet openfore the commencement of the slaking oper- 1n a ation. It should also be remarked that the 70 or the. purpose of removing all foreign clearing blade f can also be used in apparabodies, small pieces of unburnt lime, slag tus working under atmospheric pressure, arising from the burning-coke etc., the emp-' also that the annular space bounded on the tying spout a is connected with a fine sieve one hand by the SIGVIB and on the other by 1 not shown in the drawing and through the wall of the slalnng receptacle may be which the lime falls on its exit-as dry hydrate slightly conical in order to facilitate the adof lime. I I fvance of the lime falling through the sieve The slaking is accomplished by this a paby the worm placed upon the sieve, and that ratus without any roduction of dust, in eed for the roduction of very specially dry hy-. it is even possible, by the use of the grid-like drate o lime the slaking receptacle, as alg0 slide 0 to avoid all production of dust even ready stated,,may be surrounded by a heatduring the charging of the charging hopper ing jacket. l); in reality the heat evolved by the process Having now particularly. described and as of slaking causes, as soon as the'apparatus is certained the nature of my said invention and well in action, a draft of air towards the in what manner the same is to be performed, as

vapor pipe which draws the dust which arises I. declare that-what I claim is: up through the'grid-like slide. By arrang- 1. 11 an apparatus of the character deing at the end of the vapor pipe a receptacle scribed, a stationary substantially horizontal through which the outgoing vapors are com slaking receptacle having a charging aperpelled to traverse in a zigzag course the hyture in one end and a discharge a )erture in so drate of lime carried along with them can the other end, a shaft extending ongitudi- :be completely kept back. This apparatus nally through the receptacle having a hollow whic 1 serves for slaking at ordinary atmosperforated portion, a sieve adjacent the pheric pressure can not only be employed for charging aperture and secured to the hollow the production of pulverulent or asty hyperforated portion and rotating therewith, 95 drate of lime but also, with a few a terations, and transporting blades between the sieve for slaking under high ressure, a method and discharge aperture on theshaft. which is'of advantage iiir certain kinds of 2. An apparatus of the character de lime. For the last named purpose the rescribed, comprising a fixed cylindrical slakceptacle a is constructed of strong sheet iron ing receptacle having a charging aperture at 100 so that it can withstand a steam pressure of one end and a discharge aperture .at the o about 10 atmospheres; it is also provided posite end, a shaft extending longitudinally with a steam valve,a safety valve and a through the receptacle havin a hollow perpressure gage. Such apparatus, as in the forated portion, a cylindrica sieve located 4 0 example shown, will have three openings, one opposite the charging aperture, a worm on I05 opposlte the sieve for filling the apparatus, the external eri heryof the sieve, and transthe second beneath the first for clearing out porting bla es etween the sieve and disthe unslaked portions of lime and the third charge aperture.

at the opposite end for discharging the 3. An apparatus of the character deslaked lime, but when designed for working scribed, comprising a horizontally fixed cy- 11 under high pressure these openings are lindrical slaking receptaclehavinga charging adapted to be closed in a steam-tight manaperture at one end and a discharge aperture ner furthermore; in such a paratus the at the opposite end, a hopper communicating socket b is arranged to be easily removable. with t e charging aperture, a grid adjustably The shaft e is provided with devices similar mounted in thehop er, a shaft extending to those already hereinbefore mentioned and longitudinally throug the rece tacle having it is also provided on its end next the outlet ahollowperforated portion, acy indricalsieve opening with a bladef, Fig. 3, to which'the located opposite the charging aperture, and

rotary motion of the shaft can be imparted transporting blades on the shaft between the 55 by means of a claw clutch operated by a suitsieve and discharge aperture.

65- and the door able lever. The function of this blade is to 4. An apparatus of the character deconstantly shovel away and back into the inscribed, comprising a horizontally fixed cyt'erior of the apparatus the lime which piles lindrical slaking receptacle having a charging itself up in front of the outlet opening; withaperture at one. end and a discharge aperture 60 out this precautionary measure the lime at the oppositeend, ahopper communicating wh ch piles upl would hung the mixing blades with the charging aperture, a grid adj ustably I 1 to, a standsti in a short time. In order to mounted in the hoper, a dust-conduit coma mpty out the lime after slaking has taken municating with t e receptacle, a shaft 'exs 'place the blade is thrown out of operatlon tending longitudinally through the recep 1 l tacle having a hollow perforated portion, a

cylindrical s' eve located opposite the chargfrom the top of the receptacle, a rotatable in aperture, and transporting blades on the shaft extending longitudinally through the shaft betweenythe sieve and discharge aperreceptacle havm a hollow perforated orture. t1on,a cylindrica sieve surrounding the 01- 5. An apparatus of the character delow dportion'of the shaft beneath the dustscribed, comprising a' cylindrical slaking recon iiit, a worm surroundin the sieve, ceptacle' having a charging aperture at one transporting blades carried'by t e shaft supend and a discharge'a erture at the o positev porting the sieve and adapted to advance end,ashaft eXten ing ongitudinallyt rough material through the latter, a plurality of 5 the receptacle having a hollow perforate .blades on the shaft between the sieve an ortion, a cylindrical sieve located opposite discharge end of the'receptacle adapted to the charging aperture blades supporting the advance the contents towards the discharge sieve, ada ted to mix and transport the maa erture, a blade on. the shaft near the disend, a shaft exten terial in t e latter and transporting blades 0 arge aperture adapted to operate on the on the shaft between the sieve anddischarge contents reversely to the aforesaid blades,

aperture. and means for throwing said'bl ade into and 6. An apparatus of the character deout of operation. scribed, comprising a cylindrical slaking re- 8. An apparatus of the character deceptacle having a chargm aperture at one s cribed, comprisingafixed slaking receptacle end and adischarie apertii re at the opposite having a charging aperture in one end am aing ongitudinally through discharge a erture 1n the op osite end, a the receptacle having a hollow perforated rotatable s aft extending ongitudinally ortion, a cylindrical sieve located op osite through the receptacle, a sieve fixed .on'the the charging aperture, transporting lades shaft opposite the charging aperture and conbetween the sieve and discharge aperture centric to thereceptacle forming a conical adapted to advance the contents towards the annular spacebetween the sieve and receptalatter anda blade mounted onthe shaft near c'le, aworm on external periphery of the sieve,

Y the discharge aperture adapted to operate on and transporting blades on the shaft beaperture at one end and a discharge aperture ALT the contents reversely to the aforesaid blades. tween the sieve and discharge a erture. 7 An apparatus of the character de- In testimony that I claim the oregoing as scribed, comprising a horizontally fixed cymy invention, 1 have signed my name in lindrical slaking receptacle having a charging presence of two subscribing witnesses.

W ER SCHULTHESS.

at the opposite end, a hopper commumcatlng Witnesses:

with the charging aperture, a grid'adjustably ERNST FISCHER,

mounted in the hopper, a dust-conduit lea A. LIEBERKNEOHT 

